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1. High Definition Audio supports Jack Sensing, but the panel wire on the chassis must
support HDA to function correctly. Please follow the instructions in our manual and
chassis manual to install your system.
2. If you use an AC'97 audio panel, please install it to the front panel audio header by
the steps below:
A. Connect Mic_IN (MIC) to MIC2_L.
B. Connect Audio_R (RIN) to OUT2_R and Audio_L (LIN) to OUT2_L.
C. Connect Ground (GND) to Ground (GND).
D. MIC_RET and OUT_RET are for the HD audio panel only. You don't need to
connect them for the AC'97 audio panel.
E. To activate the front mic, go to the "FrontMic" Tab in the Realtek Control panel
and adjust "Recording Volume".
Chassis/Water Pump Fan
Connectors
(4-pin CHA_FAN1/WP)
(see p.1, No. 18)
(4-pin CHA_FAN2/WP)
(see p.1, No. 7)
CPU Fan Connector
(4-pin CPU_FAN1)
(see p.1, No. 5)
ATX Power Connector
(24-pin ATXPWR1)
(see p.1, No. 8)
Fatal1ty B450 Gaming-ITX/ac Series
This motherboard
provides three 4-Pin water
cooling chassis fan
GND
FAN_VOLTAGE_CONTROL
connectors. If you plan to
FAN_SPEED
connect a 3-Pin chassis
FAN_SPEED_CONTROL
water cooler fan, please
connect it to Pin 1-3.
This motherboard pro-
4
3
2
1
vides a 4-Pin CPU fan
(Quiet Fan) connector.
GND
FAN_VOLTAGE
If you plan to connect a
CPU_F
AN_SPEED
3-Pin CPU fan, please
FAN_SPEED_CONTROL
connect it to Pin 1-3.
This motherboard pro-
12
24
vides a 24-pin ATX power
connector. To use a 20-pin
ATX power supply, please
plug it along Pin 1 and Pin
1
13
13.
33
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